Avante Integration

Add MCP capabilities to Avante.nvim by including the MCP in your setup:

Add Tools To Avante

require("avante").setup({
    -- system_prompt as function ensures LLM always has latest MCP server state
    -- This is evaluated for every message, even in existing chats
    system_prompt = function()
        local hub = require("mcphub").get_hub_instance()
        return hub and hub:get_active_servers_prompt() or ""
    end,
    -- Using function prevents requiring mcphub before it's loaded
    custom_tools = function()
        return {
            require("mcphub.extensions.avante").mcp_tool(),
        }
    end,
})

• The get_active_servers_prompt() function adds the running MCP servers from MCP Hub to system_prompt
• The mcp_tool() function adds two custom tools use_mcp_tool and access_mcp_resource to avante.

Configure Avante Integration

By default, MCP server prompts will be available as /mcp:server_name:prompt_name in avante chat.

require("mcphub").setup({
    extensions = {
        avante = {
            make_slash_commands = true, -- make /slash commands from MCP server prompts
        }
    }
})

Tool Conflicts

MCP Hub's built-in Neovim server provides some basic development tools by default.

Avante also provides built-in tools for file operations and terminal access. You need to disable either the MCP Hub's built-in tools or Avante's tools to avoid conflicts. If you prefer to use neovim server tools, you should disable the corresponding Avante tools to prevent duplication:

require("avante").setup({
    disabled_tools = {
        "list_files",    -- Built-in file operations
        "search_files",
        "read_file",
        "create_file",
        "rename_file",
        "delete_file",
        "create_dir",
        "rename_dir",
        "delete_dir",
        "bash",         -- Built-in terminal access
    },
})

Auto-Approval

By default, whenever avante calls use_mcp_tool or access_mcp_resource tool, it shows a confirm dialog with tool name, server name and arguments.

You can set auto_approve to true to automatically approve MCP tool calls without user confirmation.

require("mcphub").setup({
    -- This sets vim.g.mcphub_auto_approve to true by default (can also be toggled from the HUB UI with `ga`)
    auto_approve = true, 
})

This also sets vim.g.mcphub_auto_approve variable to true. You can also toggle this option in the MCP Hub UI with ga keymap. You can see the current auto approval status in the Hub UI.

Usage

1. Start a chat in Avante
2. All the tools, resources, templates from the running MCP servers will be added to system prompt along with use_mcp_tool and access_mcp_resource tools.
3. Avante will call use_mcp_tool and access_mcp_resource tools when necessary